Residents of Hong Kong and Macau will be allowed to join the civil service on mainland China for the first time as Beijing steps up efforts to further integrate the two special administrative regions into the Greater Bay Area.The Guangdong provincial government said on Monday that 26 out of 3,115 new civil service vacancies had been set aside for applicants from Hong Kong and Macau.Only applicants who expected to graduate from mainland universities in 2020 would be eligible, with 35 the maximum…